[−][src]Struct druid::UpdateCtx

pub struct UpdateCtx<'a, D: Data + 'static + Default> {
    text_factory: &'a mut Text,
    window: &'a WindowHandle<DruidHandler<D>>,
    needs_inval: bool,
    window_id: WindowId,
}

A mutable context provided to data update methods of widgets.

Widgets should call invalidate whenever a data change causes a change in the widget's appearance, to schedule a repaint.

Fields

text_factory: &'a mut Textwindow: &'a WindowHandle<DruidHandler<D>>needs_inval: boolwindow_id: WindowId

Methods

impl<'a, D: Data + 'static + Default> UpdateCtx<'a, D>[src]

pub fn invalidate(&mut self)[src]

Invalidate.

See EventCtx::invalidate for more discussion.

pub fn text(&mut self) -> &mut Text[src]

Get an object which can create text layouts.

pub fn window(&self) -> &WindowHandle<DruidHandler<D>>[src]

Returns a reference to the current WindowHandle.

Note: For the most part we're trying to migrate WindowHandle functionality to WinCtx, but the update flow is the exception, as it's shared across multiple windows.

pub fn window_id(&self) -> WindowId[src]

Get the window id.

Auto Trait Implementations

impl<'a, D> Send for UpdateCtx<'a, D> where
    D: Sync, 

impl<'a, D> Sync for UpdateCtx<'a, D> where
    D: Sync, 

impl<'a, D> Unpin for UpdateCtx<'a, D>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<T> RoundFrom<T> for T[src]

impl<T, U> RoundInto<U> for T where
    U: RoundFrom<T>, [src]

impl<T> Same<T> for T[src]

type Output = T

Should always be Self

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.